<ion-tabs>

  <ion-tab-bar slot="bottom">
    <ion-tab-button tab="login" class="tab active">
      <img src="../../assets/img/img/tabbar_01s.png">
      <img src="../../assets/img/img/tabbar_01.png">
      <span>首页</span>
    </ion-tab-button>

    <ion-tab-button tab="tab1" class="tab">
      <img src="../../assets/img/img/tabbar_02s.png">
      <img src="../../assets/img/img/tabbar_02.png">
      <span>置换</span>
    </ion-tab-button>

    <ion-tab-button tab="tab2" class="tab">
      <img src="../../assets/img/img/tabbar_03s.png">
      <img src="../../assets/img/img/tabbar_03.png">
      <span>生态</span>
    </ion-tab-button>

    <ion-tab-button tab="tab3" class="tab">
      <img src="../../assets/img/img/tabbar_04s.png">
      <img src="../../assets/img/img/tabbar_04.png">
      <span>我的</span>
    </ion-tab-button>
  </ion-tab-bar>

</ion-tabs>